I've only watched SW and played HALO: Combat Evolved, so I don't know a lot from the novels for either. IIRC, Cortana and the Pride of Autumn took out 3 Covenant ships before the landing on Halo. If we accept that the PoA doesn't have any type of energy shield and is in all or most respects inferior to Imperial ships, then we might want to rethink the parity of Covanent weapons or tactics with Imperial ships.
The Death Star and Halo are interesting. Maybe the Empire could build a halo given enough time. Maybe they did a long, long time ago and they were the Forerunners. Hmmm, and maybe the Flood is a virulent form of midichlorians...
Either way, I bet the Master Chief could take on a bunch of Storm troopers and win.
Et tu BAUT? Quantum mutatus ab illo.